Fastest Way to Append Multiple Elements to an Array

["Nordlöw" via Digitalmars-d-learn]

On Wednesday, 31 December 2014 at 00:36:36 UTC, Damian wrote:
> Append and Prepend would be very useful additions to Phobos it's
> quite surprising there not already there? In any case would love
> to see some pull requests :)

Do we really need Append and Prepend (along with append and 
prepend) here? Doesn't [cC]hain already fulfill the needs of a 
lazy range in this case inplace of Append?

/Per